I am glad I found a way to keep my little Pearl from waking up too soon. Since we are getting into low 40's temperature sometimes, being warm and comfortable in bed is so important for her. What I do is bring her in our bed, cover her with the sheet and quilt plus a heavy pillow in her legs to keep her from moving too much.
She could sleep up to three hours this way that if big sister won't bother her or make noises. Ah it is so nice to be a baby and have a nice big warm bed to snuggle in.